Researchers have discovered one of the causes of gray hair: stuck stem melanocyte stem cells.
A Study Says Gray Hair May Be Reversible
Bad news for Just For Men.
https://www.popularmechanics.com/science/health/a62991234/gray-hair-could-be-reversible-new-study/?taid=6741ee14bf681400017cac2f

Seonglae Cho